Swimming pool



FIG. 1 is a front view of a swimming pool showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left-hand-side view thereof;

FIG. 4 is a right-hand-side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective thereof.

The broken lines in the figures depict of the swimming pool that form nopart of the claimed design.

CLAIM The ornamental design for a swimming pool, as shown and described. 